Concept-wise Practice

class 11 MCQ Questions for Class 11

class 11 se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

2918 questions tagged with class 11.

यदि छायांकित भाग (x)-अक्ष के ऊपर, (y)-अक्ष के दाईं ओर और (2x+y=10) के नीचे सीमा सहित है, तो असमानताओं का तंत्र कौन-सा है?

If the shaded part is above the (x)-axis, to the right of the (y)-axis, and below (2x+y=10) with boundary, which system of inequalities represents it?

Explanation opens after your attempt
Correct Answer

D. \(x\geq 0\), \(y\geq 0\), \(2x+y\leq 10\)

Step 1

Concept

The axis directions give \(x\geq 0\), \(y\geq 0\), and being below the line gives \(2x+y\leq 10\). Exam tip: Convert words into axis inequalities first.

Step 2

Why this answer is correct

The correct answer is D. \(x\geq 0\), \(y\geq 0\), \(2x+y\leq 10\). The axis directions give \(x\geq 0\), \(y\geq 0\), and being below the line gives \(2x+y\leq 10\). Exam tip: Convert words into axis inequalities first.

Step 3

Exam Tip

अक्षों की दिशा से \(x\geq 0\), \(y\geq 0\) और रेखा के नीचे से \(2x+y\leq 10\) मिलता है। परीक्षा सुझाव: शब्दों को पहले अक्षीय असमानताओं में बदलें।

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असमानता \(4x-y\leq 8\) को (y) के रूप में लिखकर ग्राफ का सही पक्ष चुनिए।

Rewrite \(4x-y\leq 8\) in terms of (y) and choose the correct side of the graph.

Explanation opens after your attempt
Correct Answer

A. \(y\geq 4x-8\), सीमा सहित\(y\geq 4x-8\), with boundary

Step 1

Concept

When removing the negative coefficient of (y), the inequality sign reverses. Exam tip: Never forget to reverse the sign when dividing by a negative number.

Step 2

Why this answer is correct

The correct answer is A. \(y\geq 4x-8\), सीमा सहित / \(y\geq 4x-8\), with boundary. When removing the negative coefficient of (y), the inequality sign reverses. Exam tip: Never forget to reverse the sign when dividing by a negative number.

Step 3

Exam Tip

ऋणात्मक (y) को हटाते समय असमानता की दिशा बदलती है। परीक्षा सुझाव: ऋण से भाग देने पर संकेत पलटना न भूलें।

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बिंदु ((2,3)) तंत्र \(x+2y\leq 8\), (3x-y>1) के लिए कौन-सा निष्कर्ष देता है?

What conclusion does the point ((2,3)) give for the system \(x+2y\leq 8\), (3x-y>1)?

Explanation opens after your attempt
Correct Answer

C. हल क्षेत्र में है और पहली सीमा पर हैIt is in the solution region and on the first boundary

Step 1

Concept

Since \(2+2\cdot3=8\) and \(3\cdot2-3=3>1\), the point is valid. Exam tip: A boundary point is excluded only for a strict inequality.

Step 2

Why this answer is correct

The correct answer is C. हल क्षेत्र में है और पहली सीमा पर है / It is in the solution region and on the first boundary. Since \(2+2\cdot3=8\) and \(3\cdot2-3=3>1\), the point is valid. Exam tip: A boundary point is excluded only for a strict inequality.

Step 3

Exam Tip

\(2+2\cdot3=8\) और \(3\cdot2-3=3>1\) इसलिए बिंदु मान्य है। परीक्षा सुझाव: सीमा पर बिंदु तभी हटता है जब असमानता कठोर हो।

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तंत्र (x+2y<8), \(2x+y\leq 8\) के ग्राफ में सीमा रेखाओं का सही प्रकार क्या है?

What is the correct type of boundary lines in the graph of (x+2y<8), \(2x+y\leq 8\)?

Explanation opens after your attempt
Correct Answer

B. पहली टूटी और दूसरी ठोसFirst dashed and second solid

Step 1

Concept

The inequality (x+2y<8) is strict, so its boundary is not included. Exam tip: Use a dashed line for (<) and (>).

Step 2

Why this answer is correct

The correct answer is B. पहली टूटी और दूसरी ठोस / First dashed and second solid. The inequality (x+2y<8) is strict, so its boundary is not included. Exam tip: Use a dashed line for (<) and (>).

Step 3

Exam Tip

(x+2y<8) कठोर असमानता है इसलिए उसकी सीमा शामिल नहीं है। परीक्षा सुझाव: (<) और (>) के लिए टूटी रेखा बनाइए।

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तंत्र \(x+y\leq 5\), \(x-y\geq 1\), \(y\geq 0\) के हल क्षेत्र के शीर्ष कौन-से हैं?

What are the vertices of the solution region of the system \(x+y\leq 5\), \(x-y\geq 1\), \(y\geq 0\)?

Explanation opens after your attempt
Correct Answer

A. ((1,0)), ((5,0)), ((3,2))

Step 1

Concept

The intersections of the boundary lines and their cuts on (y=0) give these three vertices. Exam tip: Solve boundary lines in pairs and verify each vertex.

Step 2

Why this answer is correct

The correct answer is A. ((1,0)), ((5,0)), ((3,2)). The intersections of the boundary lines and their cuts on (y=0) give these three vertices. Exam tip: Solve boundary lines in pairs and verify each vertex.

Step 3

Exam Tip

रेखाओं के प्रतिच्छेद और (y=0) पर कटान से ये तीन शीर्ष मिलते हैं। परीक्षा सुझाव: हर सीमा रेखा को जोड़ी में हल करके शीर्ष जाँचिए।

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प्रथम चतुर्थांश में \(3x+2y\geq 12\) का हल क्षेत्र कैसा होगा?

In the first quadrant, what is the solution region of \(3x+2y\geq 12\)?

Explanation opens after your attempt
Correct Answer

D. रेखा के ऊपर वाला असीमित भाग सीमा सहितUnbounded part above the line with boundary

Step 1

Concept

The origin gives \(0\geq 12\), which is false, so the side away from the origin is chosen. Exam tip: Always combine the region with the axes in the first quadrant.

Step 2

Why this answer is correct

The correct answer is D. रेखा के ऊपर वाला असीमित भाग सीमा सहित / Unbounded part above the line with boundary. The origin gives \(0\geq 12\), which is false, so the side away from the origin is chosen. Exam tip: Always combine the region with the axes in the first quadrant.

Step 3

Exam Tip

मूल बिंदु से \(0\geq 12\) असत्य है इसलिए रेखा से दूर वाला भाग चुना जाता है। परीक्षा सुझाव: प्रथम चतुर्थांश क्षेत्र को हमेशा अक्षों से भी मिलाइए।

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असमानता (x-2y>4) की सीमा रेखा और छायांकित भाग के बारे में सही विकल्प चुनिए।

Choose the correct option about the boundary line and shaded part for (x-2y>4).

Explanation opens after your attempt
Correct Answer

C. टूटी रेखा और मूल बिंदु से विपरीत भागDashed line and side opposite origin

Step 1

Concept

Substituting ( (0,0) ) gives (0>4), which is false, so the opposite side is taken. Exam tip: (>) does not include the boundary.

Step 2

Why this answer is correct

The correct answer is C. टूटी रेखा और मूल बिंदु से विपरीत भाग / Dashed line and side opposite origin. Substituting ( (0,0) ) gives (0>4), which is false, so the opposite side is taken. Exam tip: (>) does not include the boundary.

Step 3

Exam Tip

( (0,0) ) रखने पर (0>4) असत्य है इसलिए विपरीत पक्ष लिया जाएगा। परीक्षा सुझाव: (>) में सीमा रेखा शामिल नहीं होती।

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असमानता \(2x+3y\leq 6\) के ग्राफ में कौन-सा अर्ध-समतल लिया जाएगा?

Which half-plane is taken in the graph of the inequality \(2x+3y\leq 6\)?

Explanation opens after your attempt
Correct Answer

B. मूल बिंदु की ओर और सीमा सहितToward origin with boundary

Step 1

Concept

Putting the origin gives \(0\leq 6\), so the side containing it is taken. Exam tip: \(\leq\) includes the boundary line.

Step 2

Why this answer is correct

The correct answer is B. मूल बिंदु की ओर और सीमा सहित / Toward origin with boundary. Putting the origin gives \(0\leq 6\), so the side containing it is taken. Exam tip: \(\leq\) includes the boundary line.

Step 3

Exam Tip

मूल बिंदु रखने पर \(0\leq 6\) सत्य है इसलिए वही पक्ष लिया जाता है। परीक्षा सुझाव: \(\leq\) में सीमा रेखा शामिल होती है।

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व्यवस्था \(y\le x+2\), \(y\ge -x+4\), \(x\le5\) में दोनों तिरछी रेखाओं का प्रतिच्छेद कौन सा है?

In \(y\le x+2\), \(y\ge -x+4\), \(x\le5\), what is the intersection of the two slant boundary lines?

Explanation opens after your attempt
Correct Answer

A. ( (1,3) )

Step 1

Concept

From (x+2=-x+4), (2x=2), so (x=1) and (y=3). The intersection of slant boundaries can mark the start or a corner of a region.

Step 2

Why this answer is correct

The correct answer is A. ( (1,3) ). From (x+2=-x+4), (2x=2), so (x=1) and (y=3). The intersection of slant boundaries can mark the start or a corner of a region.

Step 3

Exam Tip

(x+2=-x+4) से (2x=2), इसलिए (x=1) और (y=3) है। तिरछी सीमाओं का प्रतिच्छेद क्षेत्र की शुरुआत या कोना बता सकता है।

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यदि सीमा रेखाएं (x=2), (x=7), (y=1), (y=6) हैं, तो हल क्षेत्र का आकार क्या है?

If the boundary lines are (x=2), (x=7), (y=1), and (y=6), what is the shape of the solution region?

Explanation opens after your attempt
Correct Answer

B. आयतRectangle

Step 1

Concept

Two vertical and two horizontal boundaries together form a closed rectangle. In a graph, pairs of parallel boundaries help identify the shape quickly.

Step 2

Why this answer is correct

The correct answer is B. आयत / Rectangle. Two vertical and two horizontal boundaries together form a closed rectangle. In a graph, pairs of parallel boundaries help identify the shape quickly.

Step 3

Exam Tip

दो ऊर्ध्वाधर और दो क्षैतिज सीमाएं मिलकर बंद आयत बनाती हैं। ग्राफ में समानांतर सीमाओं की जोड़ी से आकार तुरंत पहचाना जा सकता है।

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असमानता \(2x+3y\le18\) के लिए कौन सा बिंदु सीमा के अंदर है और अक्षों पर नहीं है?

For \(2x+3y\le18\), which point is inside the boundary and not on the axes?

Explanation opens after your attempt
Correct Answer

B. ( (3,3) )

Step 1

Concept

At ( (3,3) ), (6+9=15<18), so it is inside and not on the axes. For an interior point, look for a strict inequality value.

Step 2

Why this answer is correct

The correct answer is B. ( (3,3) ). At ( (3,3) ), (6+9=15<18), so it is inside and not on the axes. For an interior point, look for a strict inequality value.

Step 3

Exam Tip

( (3,3) ) पर (6+9=15<18), इसलिए यह अंदर है और अक्षों पर नहीं है। अंदरूनी बिंदु के लिए सख्त कम मान देखें।

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यदि \(x+y\le9\), \(x-y\le3\), \(y\ge1\), \(x\ge0\) हैं, तो (y=1) पर हल क्षेत्र का दायां अंतिम बिंदु कौन सा है?

If \(x+y\le9\), \(x-y\le3\), \(y\ge1\), \(x\ge0\), what is the right endpoint of the solution region on (y=1)?

Explanation opens after your attempt
Correct Answer

B. ( (4,1) )

Step 1

Concept

At (y=1), \(x\le8\) and \(x\le4\), so the tighter limit is (x=4). For the right endpoint, choose the smaller upper bound from all constraints.

Step 2

Why this answer is correct

The correct answer is B. ( (4,1) ). At (y=1), \(x\le8\) and \(x\le4\), so the tighter limit is (x=4). For the right endpoint, choose the smaller upper bound from all constraints.

Step 3

Exam Tip

(y=1) पर \(x\le8\) और \(x\le4\), इसलिए कड़ी सीमा (x=4) है। दाएं अंतिम बिंदु के लिए सभी ऊपरी सीमाओं में छोटी सीमा चुनें।

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व्यवस्था \(x+2y\le12\), \(2x+y\le12\), \(x+y\ge3\), \(x\ge0\), \(y\ge0\) में कौन सा बिंदु हल क्षेत्र में नहीं है?

For \(x+2y\le12\), \(2x+y\le12\), \(x+y\ge3\), \(x\ge0\), \(y\ge0\), which point is not in the solution region?

Explanation opens after your attempt
Correct Answer

C. ( (1,1) )

Step 1

Concept

At ( (1,1) ), (x+y=2), which is less than (3). In multi-inequality questions, one false condition is enough to reject a point.

Step 2

Why this answer is correct

The correct answer is C. ( (1,1) ). At ( (1,1) ), (x+y=2), which is less than (3). In multi-inequality questions, one false condition is enough to reject a point.

Step 3

Exam Tip

( (1,1) ) पर (x+y=2), जो (3) से कम है। बहु-असमानता प्रश्नों में अस्वीकृति के लिए एक असत्य शर्त काफी है।

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रेखा (x=4) के बाईं ओर और रेखा (y=-1) के ऊपर वाले क्षेत्र को कौन सी व्यवस्था दिखाती है?

Which system represents the region left of (x=4) and above (y=-1)?

Explanation opens after your attempt
Correct Answer

B. \(x\le4\), \(y\ge-1\)

Step 1

Concept

Left of (x=4) is \(x\le4\), and above (y=-1) is \(y\ge-1\). For vertical and horizontal boundaries, identify direction separately.

Step 2

Why this answer is correct

The correct answer is B. \(x\le4\), \(y\ge-1\). Left of (x=4) is \(x\le4\), and above (y=-1) is \(y\ge-1\). For vertical and horizontal boundaries, identify direction separately.

Step 3

Exam Tip

रेखा (x=4) के बाईं ओर \(x\le4\) और (y=-1) के ऊपर \(y\ge-1\) होता है। ऊर्ध्वाधर और क्षैतिज सीमाओं के लिए दिशा अलग-अलग पहचानें।

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प्रथम चतुर्थांश में \(x+2y\ge6\) और \(2x+y\ge6\) का संयुक्त हल कैसा है?

In the first quadrant, what type of common solution is formed by \(x+2y\ge6\) and \(2x+y\ge6\)?

Explanation opens after your attempt
Correct Answer

B. असीमित क्षेत्रUnbounded region

Step 1

Concept

Both inequalities select regions above the boundary lines, and the common region extends indefinitely. Conditions with \(\ge\) can often create an unbounded region.

Step 2

Why this answer is correct

The correct answer is B. असीमित क्षेत्र / Unbounded region. Both inequalities select regions above the boundary lines, and the common region extends indefinitely. Conditions with \(\ge\) can often create an unbounded region.

Step 3

Exam Tip

दोनों असमानताएं रेखाओं के ऊपर की ओर क्षेत्र देती हैं और क्षेत्र दूर तक फैलता है। \(\ge\) वाली सीमाएं अक्सर असीमित क्षेत्र बना सकती हैं।

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असमानता \(y\le -2x+6\) का छायांकित भाग रेखा के किस तरफ होगा?

On which side of the line is the shaded region for \(y\le -2x+6\)?

Explanation opens after your attempt
Correct Answer

B. रेखा के नीचे या रेखा सहितBelow the line including the line

Step 1

Concept

An inequality in the form \(y\le\) represents the region below the line. The equality part means the boundary line is included.

Step 2

Why this answer is correct

The correct answer is B. रेखा के नीचे या रेखा सहित / Below the line including the line. An inequality in the form \(y\le\) represents the region below the line. The equality part means the boundary line is included.

Step 3

Exam Tip

\(y\le\) रूप में असमानता रेखा के नीचे वाले भाग को दर्शाती है। बराबरी होने से सीमा रेखा भी शामिल होती है।

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यदि \(2x+y\le14\), \(x+2y\le14\), \(x\ge0\), \(y\ge0\) हैं, तो हल क्षेत्र का वह शीर्ष कौन सा है जहां दोनों तिरछी रेखाएं मिलती हैं?

If \(2x+y\le14\), \(x+2y\le14\), \(x\ge0\), \(y\ge0\), which vertex is where the two slant lines meet?

Explanation opens after your attempt
Correct Answer

C. ( \left\(\frac{14}{3},\frac{14}{3}\right\) )

Step 1

Concept

The two equations give (x=y) and (3x=14), so the vertex is ( \left\(\frac{14}{3},\frac{14}{3}\right\) ). Symmetric boundaries can quickly give (x=y).

Step 2

Why this answer is correct

The correct answer is C. ( \left\(\frac{14}{3},\frac{14}{3}\right\) ). The two equations give (x=y) and (3x=14), so the vertex is ( \left\(\frac{14}{3},\frac{14}{3}\right\) ). Symmetric boundaries can quickly give (x=y).

Step 3

Exam Tip

दोनों समीकरणों से (x=y) और (3x=14), इसलिए शीर्ष ( \left\(\frac{14}{3},\frac{14}{3}\right\) ) है। सममित सीमाओं में (x=y) जल्दी मिल सकता है।

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ग्राफीय हल में \(x\le3\) और \(y\ge2x+1\) के लिए कौन सा बिंदु स्वीकार होगा?

Which point is accepted for the graphical solution of \(x\le3\) and \(y\ge2x+1\)?

Explanation opens after your attempt
Correct Answer

C. ( (1,4) )

Step 1

Concept

At ( (1,4) ), \(1\le3\) and \(4\ge3\) are true. Check both the vertical boundary and the oblique boundary for each option.

Step 2

Why this answer is correct

The correct answer is C. ( (1,4) ). At ( (1,4) ), \(1\le3\) and \(4\ge3\) are true. Check both the vertical boundary and the oblique boundary for each option.

Step 3

Exam Tip

( (1,4) ) पर \(1\le3\) और \(4\ge3\) सत्य हैं। हर विकल्प में ऊर्ध्वाधर सीमा और तिरछी सीमा दोनों जांचें।

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कौन सा कथन \(x+y\le4\) और \(x+y\ge7\) के ग्राफीय हल के लिए सही है?

Which statement is correct for the graphical solution of \(x+y\le4\) and \(x+y\ge7\)?

Explanation opens after your attempt
Correct Answer

B. हल क्षेत्र रिक्त हैThe solution region is empty

Step 1

Concept

The value (x+y) cannot be at most (4) and at least (7) simultaneously. Parallel bounds in opposite positions can give an empty region.

Step 2

Why this answer is correct

The correct answer is B. हल क्षेत्र रिक्त है / The solution region is empty. The value (x+y) cannot be at most (4) and at least (7) simultaneously. Parallel bounds in opposite positions can give an empty region.

Step 3

Exam Tip

(x+y) एक साथ (4) से कम या बराबर और (7) से अधिक या बराबर नहीं हो सकता। समान दिशा की समानांतर सीमाएं खाली क्षेत्र दे सकती हैं।

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असमानता \(3x+y\le15\) और \(x+3y\le15\) के पहले चतुर्थांश हल क्षेत्र में रेखाओं का प्रतिच्छेद क्या है?

In the first-quadrant solution region for \(3x+y\le15\) and \(x+3y\le15\), what is the intersection of the two boundary lines?

Explanation opens after your attempt
Correct Answer

A. ( \left\(\frac{15}{4},\frac{15}{4}\right\) )

Step 1

Concept

Adding the equations gives (4x+4y=30), and by symmetry \(x=y=\frac{15}{4}\). Use symmetry when boundary lines have a similar structure.

Step 2

Why this answer is correct

The correct answer is A. ( \left\(\frac{15}{4},\frac{15}{4}\right\) ). Adding the equations gives (4x+4y=30), and by symmetry \(x=y=\frac{15}{4}\). Use symmetry when boundary lines have a similar structure.

Step 3

Exam Tip

दोनों समीकरण जोड़ने पर (4x+4y=30) और सममिति से \(x=y=\frac{15}{4}\) है। समान संरचना वाली रेखाओं में सममिति का उपयोग करें।

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यदि \(x+2y\le10\), \(x\ge2\), \(y\ge1\) हैं, तो (x+2y=10) पर बनने वाले दो शीर्ष कौन से हैं?

If \(x+2y\le10\), \(x\ge2\), \(y\ge1\), which two vertices lie on (x+2y=10)?

Explanation opens after your attempt
Correct Answer

A. ( (2,4) ) और ( (8,1) )( (2,4) ) and ( (8,1) )

Step 1

Concept

At (x=2), (y=4); at (y=1), (x=8). Intersect the boundary line with the given lower limits.

Step 2

Why this answer is correct

The correct answer is A. ( (2,4) ) और ( (8,1) ) / ( (2,4) ) and ( (8,1) ). At (x=2), (y=4); at (y=1), (x=8). Intersect the boundary line with the given lower limits.

Step 3

Exam Tip

(x=2) पर (y=4) और (y=1) पर (x=8) मिलता है। सीमा रेखा को दी गई निचली सीमाओं के साथ काटें।

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कौन सा बिंदु \(4x+y\ge12\), \(x+4y\ge12\), \(x\ge0\), \(y\ge0\) का संयुक्त हल है?

Which point is a common solution of \(4x+y\ge12\), \(x+4y\ge12\), \(x\ge0\), \(y\ge0\)?

Explanation opens after your attempt
Correct Answer

A. ( (2,2) )

Step 1

Concept

At ( (2,2) ), both left sides equal (10), which is less than (12). Therefore this option cannot be correct and true solutions must make both values at least (12).

Step 2

Why this answer is correct

The correct answer is A. ( (2,2) ). At ( (2,2) ), both left sides equal (10), which is less than (12). Therefore this option cannot be correct and true solutions must make both values at least (12).

Step 3

Exam Tip

( (2,2) ) पर दोनों असमानताओं में मान (10) आता है, जो (12) से कम है। इसलिए यह विकल्प सही नहीं हो सकता और सही हलों के लिए दोनों मान कम से कम (12) होने चाहिए।

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असमानता \(x-3y\le9\) में (y) के रूप में सही रूप कौन सा है?

What is the correct form in terms of (y) for \(x-3y\le9\)?

Explanation opens after your attempt
Correct Answer

A. \(y\ge\frac{x-9}{3}\)

Step 1

Concept

From \(x-3y\le9\), we get \(-3y\le9-x\), hence \(y\ge\frac{x-9}{3}\). Dividing by a negative reverses the sign.

Step 2

Why this answer is correct

The correct answer is A. \(y\ge\frac{x-9}{3}\). From \(x-3y\le9\), we get \(-3y\le9-x\), hence \(y\ge\frac{x-9}{3}\). Dividing by a negative reverses the sign.

Step 3

Exam Tip

\(x-3y\le9\) से \(-3y\le9-x\), इसलिए \(y\ge\frac{x-9}{3}\) है। ऋणात्मक से भाग देने पर चिन्ह उलटता है।

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रेखाएं (2x+y=6), (x+2y=6) और अक्षों से बने प्रथम चतुर्थांश के संयुक्त हल \(2x+y\le6\), \(x+2y\le6\) में कौन सा शीर्ष नहीं है?

Which point is not a vertex of the first-quadrant common solution \(2x+y\le6\), \(x+2y\le6\) formed with the axes?

Explanation opens after your attempt
Correct Answer

D. ( (0,3) )

Step 1

Concept

The vertices are ( (0,0) ), ( (3,0) ), ( (2,2) ), and ( (0,3) ), so every listed point is a vertex. The correct choice should have been none of these.

Step 2

Why this answer is correct

The correct answer is D. ( (0,3) ). The vertices are ( (0,0) ), ( (3,0) ), ( (2,2) ), and ( (0,3) ), so every listed point is a vertex. The correct choice should have been none of these.

Step 3

Exam Tip

इस क्षेत्र के शीर्ष ( (0,0) ), ( (3,0) ), ( (2,2) ), ( (0,3) ) हैं, इसलिए दिया गया हर बिंदु शीर्ष है। प्रश्न में सही उत्तर कोई नहीं होना चाहिए।

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व्यवस्था (x+y<5), (x+y>5), \(x\ge0\), \(y\ge0\) का हल क्षेत्र क्या होगा?

What is the solution region of (x+y<5), (x+y>5), \(x\ge0\), \(y\ge0\)?

Explanation opens after your attempt
Correct Answer

C. रिक्त समुच्चयEmpty set

Step 1

Concept

It is impossible for (x+y) to be both less than and greater than (5) at the same time. Opposite inequalities can make the solution empty.

Step 2

Why this answer is correct

The correct answer is C. रिक्त समुच्चय / Empty set. It is impossible for (x+y) to be both less than and greater than (5) at the same time. Opposite inequalities can make the solution empty.

Step 3

Exam Tip

एक ही समय में (x+y) का (5) से कम और अधिक होना असंभव है। विरोधी असमानताएं मिलने पर हल रिक्त हो सकता है।

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यदि \(x\ge1\), \(y\ge2\), \(x+y\le8\) हैं, तो हल क्षेत्र के शीर्ष कौन से हैं?

If \(x\ge1\), \(y\ge2\), \(x+y\le8\), what are the vertices of the solution region?

Explanation opens after your attempt
Correct Answer

A. ( (1,2) ), ( (6,2) ), ( (1,7) )

Step 1

Concept

The boundaries (x=1), (y=2), and (x+y=8) give ( (1,2) ), ( (6,2) ), and ( (1,7) ). Do not treat shifted restrictions as simple \(x\ge0\), \(y\ge0\).

Step 2

Why this answer is correct

The correct answer is A. ( (1,2) ), ( (6,2) ), ( (1,7) ). The boundaries (x=1), (y=2), and (x+y=8) give ( (1,2) ), ( (6,2) ), and ( (1,7) ). Do not treat shifted restrictions as simple \(x\ge0\), \(y\ge0\).

Step 3

Exam Tip

सीमाएं (x=1), (y=2) और (x+y=8) से ( (1,2) ), ( (6,2) ), ( (1,7) ) मिलते हैं। बदले हुए अक्षीय प्रतिबंधों को साधारण \(x\ge0\), \(y\ge0\) न मानें।

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कौन सी असमानता (x)-अक्ष के नीचे वाले अर्ध-तल को दर्शाती है और सीमा को भी शामिल करती है?

Which inequality represents the half-plane below the (x)-axis and includes the boundary?

Explanation opens after your attempt
Correct Answer

C. \(y\le0\)

Step 1

Concept

The (x)-axis is (y=0), and below it (y) is less than or equal to zero. Use \(\le\) when the boundary is included.

Step 2

Why this answer is correct

The correct answer is C. \(y\le0\). The (x)-axis is (y=0), and below it (y) is less than or equal to zero. Use \(\le\) when the boundary is included.

Step 3

Exam Tip

(x)-अक्ष की रेखा (y=0) है और नीचे के लिए (y) शून्य से कम या बराबर होता है। सीमा शामिल होने पर \(\le\) का प्रयोग करें।

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यदि हल क्षेत्र \(y\ge0\), \(x\ge0\), \(2x+3y\le12\) से बनता है, तो क्षेत्रफल कितना है?

If the solution region is formed by \(y\ge0\), \(x\ge0\), \(2x+3y\le12\), what is its area?

Explanation opens after your attempt
Correct Answer

A. (12) वर्ग इकाई(12) square units

Step 1

Concept

The intercepts are ( (6,0) ) and ( (0,4) ), so the area is \(\frac{1}{2}\times6\times4=12\). For a triangular region, identify base and height.

Step 2

Why this answer is correct

The correct answer is A. (12) वर्ग इकाई / (12) square units. The intercepts are ( (6,0) ) and ( (0,4) ), so the area is \(\frac{1}{2}\times6\times4=12\). For a triangular region, identify base and height.

Step 3

Exam Tip

अक्षों पर प्रतिच्छेद ( (6,0) ) और ( (0,4) ) हैं, इसलिए क्षेत्रफल \(\frac{1}{2}\times6\times4=12\) है। त्रिभुज क्षेत्र के लिए आधार और ऊंचाई पहचानें।

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असमानताओं \(y\le3x+2\) और (y>3x-4) के संयुक्त हल क्षेत्र के बारे में सही कथन कौन सा है?

Which statement is correct about the common solution of \(y\le3x+2\) and (y>3x-4)?

Explanation opens after your attempt
Correct Answer

A. दो समानांतर रेखाओं के बीच का पट्टी क्षेत्रA strip between two parallel lines

Step 1

Concept

Both lines have slope (3), so they are parallel. The inequalities give a strip-like region between them.

Step 2

Why this answer is correct

The correct answer is A. दो समानांतर रेखाओं के बीच का पट्टी क्षेत्र / A strip between two parallel lines. Both lines have slope (3), so they are parallel. The inequalities give a strip-like region between them.

Step 3

Exam Tip

दोनों रेखाओं की ढाल (3) है, इसलिए वे समानांतर हैं। असमानताएं उनके बीच का पट्टी क्षेत्र देती हैं।

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कौन सा बिंदु \(x+2y\le9\) और \(3x+y\le11\) दोनों की सीमा रेखाओं के प्रतिच्छेद पर है?

Which point is at the intersection of the boundary lines of \(x+2y\le9\) and \(3x+y\le11\)?

Explanation opens after your attempt
Correct Answer

A. ( \left\(\frac{13}{5},\frac{16}{5}\right\) )

Step 1

Concept

Solving (x+2y=9) and (3x+y=11) gives \(x=\frac{13}{5}\), \(y=\frac{16}{5}\). Fractional vertices are common in graphical solutions.

Step 2

Why this answer is correct

The correct answer is A. ( \left\(\frac{13}{5},\frac{16}{5}\right\) ). Solving (x+2y=9) and (3x+y=11) gives \(x=\frac{13}{5}\), \(y=\frac{16}{5}\). Fractional vertices are common in graphical solutions.

Step 3

Exam Tip

(x+2y=9) और (3x+y=11) हल करने पर \(x=\frac{13}{5}\), \(y=\frac{16}{5}\) मिलता है। भिन्नात्मक शीर्ष भी ग्राफीय हल में सामान्य हैं।

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